is retatrutide bad vs Tirzepatide (2026): Differences in Weight Loss, Metabol – Revolution Health & Wellness Comment “curious” and I'll send
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Tirzepatide doses change over time, and your care team uses a short monthly video visit to review your progress, adjust your dose safely, and answer your questions
However, native GLP-1 has a limited half-life (1.55 min) due to its degradation by the enzyme Dipeptidyl peptidase 4 (DPP-4), necessitating the development of GLP-1 receptor agonists (GLP-1RAs) with longer activity (Campbell and Drucker 2013)
[DOI] [PubMed] [Google Scholar] 152
In particular, neurons of the hindbrain found in the nucleus-tractus solitarius (NTS) secrete GLP-1 and activate hypothalamic neurons of the paraventricular nucleus (PVN), resulting in satiety (155, 156)
It could be hypothesized that there is an association between the PK of the various GLP-1 RAs, the duration of receptor activation/occupancy and the extent of the HR effect
